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T. J. MURDOGK. BOBBIN HOLDER AND THREAD GTGHER.

Patented June 18, 1895.

(No Model.)

Wit

UNITED STATES nmTMCWnn THOMAS J. MURDOCK, OF woonsoonn'r, nuonn ISLAND.

BOBBlN-HOLDER AND 'l'HREAD-CATCHER.

"S'PECIFICATION forming part of Letters Patent NO. 541,377, dated June18 1895.

Application filed July 23,1894- Serial No. 518,296- (No model.)

To all whom it may concern.-

Be it known that I, THOMAS J. MURDOCK, a citizen of the United States,residing atWoonsocket, in the county of Providence and State of RhodeIsland, have invented certain new and useful Improvements inBobbin-Holders and Thread-Catchers; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same, reference being bad to the accompanying drawings,and to figures of reference marked thereon, which form a part of thisspecification.

This invention relates to bobbin-holders for service during the processof filling or windingemptybobbins. This mechanism isadapted for generaluse on mules and ring spinning frames or twisters, and the action of thefaller-wire and the doffing of the bobbins and putting on of emptybobbins are the same as are now generally practiced.

The present method in general use for bold ing bobbins on spindlesconsists in winding enough yarn around them to form a packing. On thesepackings the bobbins are driven to place. hen the bobbins are full thetallerwire is pressed below the heads, guiding the threads to place andthe spindles are made to rotate so that enough yarn is wound around themto cause the threads to break when the bobbins are being removed. Thusthe threads remain fast to the spindles in readiness to be raised by thewire and again wound around the empty bobbins. WVhen a full bobbin isremoved from the spindle there always remains fast to it near the head,what is called the thread-end. If this end is too long it causes troublewhile in the act of being woven into cloth as it becomes entangled withthe true thread, while the latter is passing swiftly from the bobbin andcauses the thread to break, making waste and imperfect cloth. Toovercome this difficulty is oneof the features of my invention;accordingly I have formed a thread-catch which consists of fingeropenings to be made in the disk, through which the thread passes, thelatter being wound diagonally around the outside cup or shell for ashort distance, and is caught at a single point, so that when the wiresare raised, that portion of the thread which was around the outer shellcomes off and rests at the point where caught, thus leaving the threadend very short.

My improvements are further embodied not only in thebobbin-holderproper,but likewise in mechanism which serves to catch andhold the thread.

The gist of my invention consists in making the bobbin-holder operatethe th read-catch,'so thatthe act of removing the bobbin, when filled,causes the catch to grasp the thread which is broken by removal of thebobbin. Conversely, when an empty bobbin is put in place the catch isagain operated to release the thread-end which passes on and is wrappedabout the bobbin. Thus the waste ends are obviated, an importantfeature, while the several functions of holding, severing, and releasingthe thread are entirely automatic, and the operative exercises nothought or care to see that these important steps are carried out. Thevery act of taking off a full bobbin and replacing an empty bobbin inthe holder is a positive assurance that these several actsholding,severing of the thread and releasing of the thread-endare efficientlyperformed.

The drawings accompanying this specification represent, in Figure 1, abobbin-holder and thread-catch in side elevation, the empty bobbinresting in the mouth of the holder prior to disengagement of the threadend. Fig. 2 is a vertical central section on line 3 3 in Fig. 3. Fig. 3is a plauwith the spindle in section. Fig. 4. isa perspective view of aholding-plate. Fig.5 is a diagram indicating the thread and taller-wireraised in the act of passing the thread to an empty bobbin, the threadend being held fast. Fig. 6 is a similar view showing the position ofthread and wire in the act of catching the thread prior to removal of afull bobbin.

In the above drawings I have represented a spindle at 2 of the usualtype adapted for rotation by means of the wheel 3 and arranged toreceivea bobbin 4 upon which yarn is to be wound. This material isindicated at 5. One feature of my invention is embodied in thebobbin-holder, as composed of a circuvertically positioned upon itsupper surface are two or more holding plates 8. These latter comprise abody portion 9 which is bent- I00 .lar disk 7 firmly afiixed to thespindle, while to approximate in curvature to the contiguous portions ofthe bobbin head 10 made in the usual manner. The upper edge is flared at12, while a tongue 13 extends through a hole in the disk 7 and is heldfast to a movable shell by a pin or by forming a knob 14 which preventsits withdrawal. The shape of the plates 8 and their attachment to thedisk are such that they can rock or oscillate in lines radially towardand away from the spindle. To compel them to move simultaneously anannular coiled spring 15 girdles the plates and forces them toward acentral point which is the axis of the spindle. The outwardly curvededges or lips 12 prevent the spring from slipping off and hold it inplace.

From the above description of parts it is evident that a large holdingsurface is presented, while the bobbin is positioned centrally of thespindle. Furthermore the holder is very simple and comprises merely thefixed disk, two or more oscillating holding plates and an annularspring. In fact the number of parts need not exceed four in number, andsince the holding plates can be struck up from sheet metal the holdermay be made at a very small expense.

In the winding of bobbins it is very necessary to hold the thread-endsat the time a full bobbin is removed and furthermore it is of stillgreater importance to avoid the threadends which present obstructions togood weaving as is well known to those skilled in the art. To overcomethese difficulties and to be able to wind bobbins in which there shallbe no thread-ends, I have constructed a thread-catch. This may beattached to the bobbin-holder before described, or not, as circumstancesdictate. In the present instance, as illustrated in Figs. 1, 2, 3 and 4,the bobbin holder consists of a hub 16 adapted to be fitted to spindlesof various sizes to which it is securely fastened. Mounted upon this hubis a horizontal disk 7'from which riseagroup of circumferential fingers17, formed with oppositely disposed points 18 18 to provide for right orleft rotation as may occur. The disk 7 is pierced at intervals to admitthe intermediate portion 19 of the holding plates and allow them tooscillate radially of the spindle, the center of oscillation being inthe shell 20. This shell or cup is formed with a tubular sleeve whichslides upon the hub, while the walls of the shell snugly inclose theexterior surface of the fingers 17 which rise vertically from the fixeddisk 7. See Figs. 1, 2 and 3. From the above description itwill be seenthat the ffingers affixed upon the disk 7 are stationary or fixedpoints, while the shell is connected to the holding plates 8. Hence asthe latter engage with the bobbin-head, the act of forcibly disengagingsaid bobbin from the plates 8 serves to reciprocate the shell. Thus inthrusting the bobbin in between the plates the shell is pushed down andthe thread-end is released. Converselyin taking off a full bobbin,theshell is pulled up. This last movement causes the shell to co-operatewith the fingers, whereby the thread is seized and held, and as thebobbin is lifted up the thread is severed at this particular point.

Reference to Fig. 5 shows the thread-catch in the position lastdescribed above, with the taller-wire at 21, and the tension at 21, withthe thread-end at 23 which is designed to travel in the direction asindicated. The faller-wire is common to all the threads and its mannerof mounting and mode of operation are such as are now in general use.

To avoid having loose thread-ends and to prevent such, the operativewhen putting on an empty bobbin proceeds as follows: In lieu ofthrusting the bobbin home within the bob bin-holder, he positions it inthe mouth of the holder asin Fig. 1 where enough friction oc ours torevolve the bobbin. He then raises the wires to the position shown inFig. 6 as he raises the faller wire the end of the thread still beingfast, and secures several turns of the thread 23 about the bobbinsufficient to cause the thread to hold fast thereupon. The bobbin is nowthrust home, which act pushes the shell 20 down and releases thethread-end which before this act was fast. The fallerwire is then toresume its normal position and the filling of the bobbin proceeds.Conversely when the bobbin is full the wires are depressed. See Fig. 6.This act carries the thread across the path of the revolving fingers,one of which seizes the thread and when the bobbin is removed the upperedge of the shell engages the fingers 17 and the thread is held fast andbroken at this point. While the wires are depressed the thread is woundabout the outside of the shell. Hence when the wire is raised as in Fig.5 it is unwound from about the shell and comes ofif to the point whereit is caught. In this way loose thread-ends are avoided.

What I claim is- 1. A revoluble spindle adapted to carry a bobbin, adisk affixed to said spindle, and a series of fingers circularly groupedand mounted upon the disk, combined with a shell adapted to wipe thefingers and mounted upon the spindle, substantially as described.

2. In a bobbin holder a revoluble spindle, a disk fast to it, a seriesof fingers forming part of the disk, combined with a shell looselymounted upon the spindle, two or more oscillating plates pivoted to theshell and extending through the disk, and means to cause the plates togrip the bobbin-head, whereby the ghell may be moved, substantially asspeci- 3. In combination with a rotary spindle, and a bobbin-holderthereupon, a group of circumferential thread-grasping fingers mounted ona disk fast on the spindle, and a shell supporting the bobbin-holder andadapted to reciprocate and to cotiperate with the fingers, substantiallyas described and stated.

4. The combination with a revoluble spindle, a transverse disk securedfast to it, and

thread-catchers thereon, of a shell loosely ing plates secured to theshell, and an annumounted on the spindle, two or more rocking lar springdisposed circumterentially 01": the plates secured to the shell, saidshell being plates, whereby the shell is adapted to recipr 5 adapted tomove upon the thread-catchers rooate upon engagement with or disengage-5 and hold the thread, while it is passing about ment of the bobbin fromsaid spindle, subthe exterior of said shell, substantially as setstantially for purposes described.

forth. In testimony whereof I affix my signature 5. The combination witha rotary spindle, in presence of two witnesses. a transverse diskaffixed to it, and thread- THOMAS J. MURDOCK.

1o catchers upon the disk and immovable with Witnesses:

respect to the spindle, of a shell loosely JAS. W. GREENE, mounted uponthe spindle, two or more rock- WILLIAM J. MOWRY.

